void CopyCategory(GraphData graphData)
{
AssertHelpers.IsNotNull(graphData, "GraphData is null while carrying out CopyCategoryAction");
AssertHelpers.IsNotNull(categoryToCopyReference, "CategoryToCopyReference is null while carrying out CopyCategoryAction");
// This is called by MaterialGraphView currently, no need to repeat it here, though ideally it would live here
//graphData.owner.RegisterCompleteObjectUndo("Copy Category");
newCategoryDataReference = graphData.CopyCategory(categoryToCopyReference);
}